AT&T is offering double data for its largest Mobile Share plans with new promotion

Are you a data hog? If so, you might be interested to hear in a new AT&T promotion that’s doubling the data offered in its largest plans. The company’s current 15, 20, 30, 40, and 50GB Mobile Share Plans will all be doubled to 30, 40, 60, 80, and 100GB for the same price starting tomorrow.

Now that’s a ton of mobile data to burn through in a month, but the low prices might be good enough reason to join a large shared data plan with your friends or family to save some money. The new 30GB plan, which is the most interesting of the bunch, costs $ 130 per month, just $ 30 more than the carrier’s oft-advertised 10GB for $ 100 plan. That’s $ 4.33 per gigabyte compared to $ 25 for the 1GB plan. However, the double data is just a temporary promotion…